[FS#2628] Kernel warning / crash on ramips: eth0 (mtk_soc_eth): transmit queue 0 timed out

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FS#2628 - Kernel warning / crash on ramips: eth0 (mtk_soc_eth): transmit queue 0 timed out
User who did this - mrakotiq (mrakotiq)

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This little patch solved the "mtk_soc_eth 1e100000.ethernet eth0: transmit timed out". At least for now. Now it cannot be reproduced in a lab or on a 75pcs routers in network.

Please try someone too and confirm if it helped.

diff --git a/target/linux/ramips/files-4.14/drivers/net/ethernet/mediatek/soc_mt7621.c b/target/linux/ramips/files-4.14/drivers
index 26a198f..597d50a 100644
--- a/target/linux/ramips/files-4.14/drivers/net/ethernet/mediatek/soc_mt7621.c
+++ b/target/linux/ramips/files-4.14/drivers/net/ethernet/mediatek/soc_mt7621.c
@@ -142,8 +142,9 @@ static void mt7621_init_data(struct fe_soc_data *data,
                FE_FLAG_HAS_SWITCH | FE_FLAG_JUMBO_FRAME;
 
        netdev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
-               NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
-               NETIF_F_SG | NETIF_F_TSO |
+//             NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
+               NETIF_F_SG |
+//             NETIF_F_TSO |
                NETIF_F_TSO6 | NETIF_F_IPV6_CSUM |
                NETIF_F_TSO_MANGLEID;
 }



BTW: i removeNETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX because in our vlan configuration it also tagged packets that it did not have. The key is remove TSO offloading, I thing.
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More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=2628#comment9190

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